[security-observability] Daily Security Observability Report — 2026-08-12

[github-actions[bot]]

Executive Summary

Over the last 7 days, 94 firewall-enabled workflow runs across the github/gh-aw repository were analyzed, covering 7,809 total outbound network requests. Firewall enforcement was extremely permissive during this window: only 21 requests (0.27%) were blocked, all attributed to unresolved/(unknown) destinations rather than named domains, spread across two workflow runs (PureLock and Tidy). No named domain was ever denied — every domain that made a request was on the allowlist, indicating the current firewall policy (10–12 rules, SSL Bump and DLP disabled) is well-tuned to the traffic these workflows generate.

No DIFC integrity-filtered events were found in the last 7 days — the Data Integrity and Flow Control gateway logged zero filtered tool calls, and the cached snapshot (updated 2026-08-12T16:19:06Z) confirms zero runs in that window. This suggests either low adoption of DIFC-covered tool calls in current workflows or an absence of triggering conditions during this period; no cross-cutting themes were observed between the two datasets since DIFC produced no events.

Overall, the security posture this week is healthy: minimal blocked traffic, no unresolved DIFC concerns, and no workflows showing signs of firewall misconfiguration requiring urgent action.

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🔥 Firewall Analysis

Key Firewall Metrics

Metric	Value
Workflows analyzed (firewall-enabled)	94
Total network requests monitored	7,809
✅ Allowed requests	7,788
🚫 Blocked requests	21
Block rate	0.27%
Total unique blocked domains	1 ((unknown) — unresolved/unlabeled destination)

📈 Firewall Request Trends

All analyzed runs fell on the same collection day in this window, with 7,788 allowed vs. 21 blocked requests. The volume is dominated by a small number of high-traffic workflows (see below), and blocked traffic represents a negligible fraction of overall activity — no signs of sustained or escalating blocking trends.

Top Blocked Domains

All 21 blocked requests were logged against an unresolved (unknown) destination rather than a specific domain name — meaning the proxy denied the connection before DNS/SNI could be attributed to a named domain. This pattern (not a named domain being blocked) suggests the traffic may be malformed requests, connection attempts to raw IPs, or SNI-less TLS handshakes rather than a policy gap against a specific service.

Most Frequently Blocked Domains

Domain	Times Blocked	Workflows	Category
(unknown)	21 (14 + 7)	PureLock, Tidy	Unresolved/unlabeled destination

Policy Rule Attribution

📋 Policy: 10–12 rules, SSL Bump disabled, DLP disabled (consistent across analyzed runs)

No rule-level hit data (rule_hits) was populated in the audited runs — the underlying proxy logs did not expose per-rule attribution for this window, so rule-level breakdowns are omitted this cycle.

View Detailed Request Patterns by Workflow

Workflow	Total Requests	Allowed	Blocked
Daily Malicious Code Scan Agent	1,194	1,194	0
PR Sous Chef	642	642	0
Typist - Go Type Analysis	325	325	0
Copilot Session Insights	277	277	0
AI Moderator	258	258	0
[aw] Failure Investigator (6h)	240	240	0
PureLock	239	225	14
Daily Rendering Scripts Verifier	239	239	0
Contribution Check	220	220	0
The Daily Repository Chronicle	215	215	0
Tidy	215	208	7
GitHub API Consumption Report Agent	212	212	0
Glossary Maintainer	202	202	0
Daily Evals Feature Report	200	200	0
ESLint Miner	199	199	0
Deep Report	197	197	0
Instructions Janitor	183	183	0
Go Fan	171	171	0
Dead Code Removal Agent	170	170	0
Claude Code User Documentation Review	160	160	0

Only PureLock and Tidy showed any blocked traffic, and in both cases the block was against the unresolved (unknown) destination rather than a distinguishable domain.

View Complete Blocked Domains List

• (unknown) — 21 total block events (14 from PureLock run 31597217516, 7 from Tidy run 31572086926)

No other domains were blocked across any of the 94 analyzed runs.

🔒 Firewall Security Recommendations

1. Investigate the (unknown) blocks in PureLock and Tidy: since these are unresolved destinations rather than named domains, review the raw proxy logs for runs 31597217516 (PureLock) and 31572086926 (Tidy) to determine whether these are benign (e.g., SNI-less health checks, malformed retries) or indicative of a tool/dependency attempting to reach an unexpected endpoint.
2. No allowlist changes needed at this time: since 100% of named-domain requests were allowed and 0 named domains were blocked, there's no evidence of overly restrictive firewall rules impacting legitimate workflow traffic this week.
3. Consider enabling rule-level attribution (if not already cost-prohibitive) so that future audits can map blocked requests to specific firewall policy rules, improving root-cause analysis for (unknown) block events.
4. Continue monitoring PureLock and Tidy in the next reporting cycle to confirm whether the (unknown) blocks are a one-off anomaly or a recurring pattern.

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🔒 DIFC Integrity Analysis

No DIFC integrity-filtered events were found in the last 7 days. The cached snapshot (updated_at: 2026-08-12T16:19:06Z, well within the 7-day freshness window) confirms a warm-start validation showing 0 runs, and the fresh filtered-logs.json pull independently confirms "total_runs": 0. There is no filtered tool-call activity to chart, bucketize, or attribute this cycle.

💡 DIFC Tuning Recommendations

1. No tuning action is required this cycle since there are zero filtered events to analyze.
2. If DIFC integrity filtering is expected to be active on more workflows, verify that the relevant MCP servers/tools are correctly instrumented to emit filtered-event telemetry — a persistent absence of events could reflect either genuinely clean tool-call activity or a gap in DIFC gateway coverage.

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Generated by the Daily Security Observability workflow (consolidated from Daily Firewall Reporter + Daily DIFC Analyzer)
Analysis window: Last 7 days | Repository: github/gh-aw
Run: https://github.com/github/gh-aw/actions/runs/31616155258

Generated by 🔒 Daily Security Observability Report · auto · 88.7 AIC · ⌖ 3.9 AIC · ⊞ 14.8K · ◷

• expires on Aug 15, 2026, 9:04 AM UTC-08:00

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